187875133 has 2 divisors, whose sum is σ = 187875134. Its totient is φ = 187875132.

The previous prime is 187875131. The next prime is 187875139. The reversal of 187875133 is 331578781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109056249 + 78818884 = 10443^2 + 8878^2 .

It is a cyclic number.

It is not a de Polignac number, because 187875133 - 2¹ = 187875131 is a prime.

Together with 187875131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 187875133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187875131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93937566 + 93937567.

It is an arithmetic number, because the mean of its divisors is an integer number (93937567).

Almost surely, 2^187875133 is an apocalyptic number.

It is an amenable number.

187875133 is a deficient number, since it is larger than the sum of its proper divisors (1).

187875133 is an equidigital number, since it uses as much as digits as its factorization.

187875133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 187875133 is about 13706.7550134961. The cubic root of 187875133 is about 572.7385737427.

The spelling of 187875133 in words is "one hundred eighty-seven million, eight hundred seventy-five thousand, one hundred thirty-three".